<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>6666666666</title>
</head>
<body>
传递来的数据值cid:
<input type="text" value="${cid}" id="cid"/>
<p>【toUserId】：
<div><input id="toUserId" name="toUserId" type="text" value="user-1"></div>
<p>【toUserId - MessageContent】：
<div><input id="contentText" name="contentText" type="text" value="hello websocket"></div>
<p>【操作】：
<div>
    <button type="button" onclick="sendMessage()">发送消息</button>
</div>
</body>

<script type="text/javascript">
    var socket;
    if (typeof (WebSocket) == "undefined") {
        console.log("您的浏览器不支持WebSocket");
    } else {
        console.log("您的浏览器支持WebSocket");
        //实现化WebSocket对象，指定要连接的服务器地址与端口  建立连接

        var cid = document.getElementById("cid").value;
        console.log("cid-->" + cid);
        var reqUrl = "http://localhost:8555/websocket/" + cid;
        socket = new WebSocket(reqUrl.replace("http", "ws"));
        //打开事件
        socket.onopen = function () {
            console.log("Socket 已打开");
            //socket.send("这是来自客户端的消息" + location.href + new Date());
        };
        //获得消息事件
        socket.onmessage = function (msg) {
            console.log("onmessage--" + msg.data);
            //发现消息进入    开始处理前端触发逻辑
        };
        //关闭事件
        socket.onclose = function () {
            console.log("Socket已关闭");
        };
        //发生了错误事件
        socket.onerror = function () {
            alert("Socket发生了错误");
            //此时可以尝试刷新页面
        }
        //离开页面时，关闭socket
        //jquery1.8中已经被废弃，3.0中已经移除
        // $(window).unload(function(){
        //     socket.close();
        //});
    }


    function sendMessage() {
        if (typeof (WebSocket) == "undefined") {
            console.log("您的浏览器不支持WebSocket");
        } else {
            // console.log("您的浏览器支持WebSocket");
            var toUserId = document.getElementById('toUserId').value;
            var contentText = document.getElementById('contentText').value;
            var msg = '{"sid":"' + toUserId + '","message":"' + contentText + '"}';
            console.log(msg);
            socket.send(msg);
        }
    }

</script>
</html>

